Combined gas and oil burner.



0. NICHOLS. COMBINED GAS AND OIL BURNER.

Patented Sept. 9, 1913.

APPLICATION FILED SEPT. 26, 1912. 1,072,976.

t m w MM@ UNITED sTATEs OLIVER NICHOLS, or MQUND VALLEY, ,Kansas COMBINED Gas AND on. BURNER. i

Specication of Letters Patent. l

Patented sept.. a, 1913.

' Application iiled September 2 6, 1912., Serial No. 722,494, y 1

T0 ZZ 'wlw/mit may.' concern t' Be it known that I, QEIVER NlCHQLS a citizen of the United States,V residing at Mound Valley, in the county of Ljl'bte and State of Kansas, have invented certa-'111. new and useful Improvements in` Combined Gas 'and Oil Burners, of which the following is a speeication;

This invention relates to combined gas and oil burners and has for its object to produce a burner equipped withA means whereby oil shall be automatically supplied to the burner in the event that the gaspressure is reduced from any cause.

With this general object in View, the invention consists in certain novel and peculiar features of construction and organization as hereinafte'described and claimed, and in order that it may be fully understood reference is to behad to the accompanying drawing, in which- Figure 1, lis a side view of a heating stove equipped with a combined gas and oil burner embodying my invention. Fig. 2,-is an enlarged plan View of the burner. Fig. 3, is a central vertical section of the burner.

Fig, 4, is a central vertical section of a valve for automatically opening the passage for oil to the burner in the event that the pre/S-l sure of the gas is lowered from any cause.

In the said drawing, a gas receptacle of any suitable configuration is shown as composed of the body or pan portion 1 and the top or cap portion 2, the lat-ter being formed with an annular depression or channel 3 in its upper side and with a shallow diametric channel or depression 4 in that portion surrounded by the channel 3, the outer.` and inner walls of channel 3 being provided with o'ttom of chafnnel 4. 1

isa i e @rsu yin estat .crece tacle 1, pipe Pliieinggpgrovidedh'with pa mixer 8 of any suitable type and with a controlling valve 9. It is also provided with a branch pipe 10, communicating with one end of a casing 11, provided with inlet and outlet ports 12 and 13, and fitting slidingly in said 'casing and normally closing said ports is a valve 14, provided-with an annular circumferential ch'annel 15. The gas at nor? mal pressure holds the valve with its channel 15 out of alinement with ports 12 and 13. To-operate said valve against the pressure of the gas, that is when the vpressure is lowered,` from any v cause, .Y a spring 16 bears et orifices 5 and 6 above the plane of the after explained, and in orderthat the pressure of the spring may be properly Uaged, a set screw 17 'isfmounted in one end fet the casing 11 and forms a resistance for'the ad- ]aCent end of spring 1G.

vement point, and provided with a pipe 19 communicating with port l, and Seid Pip@ is controlled by a valve 20. A pipe 21 leads from port 13 and communicates with a 'T- coupling V22, to the opposite ends which are attached oil vapo-rias @Oils 0r pipes 23., the same being disposed vertically above the channel of the gas receptacle 1, in such a manner `that the-flame from the orifices and 6 Shall mpinse non, them, by prefer ence, and each of sai 'coils terminates in a, depending portion 24 communicating With one end of a burner pipe 2,5. yEach of said Vpipes 25, isprovided wlth a series of burner orifices 26, one series being adapted to dis- Vcharge vaporized oil upon one arm of the adjacent coil. and the other series 'upon the other arm of said coil, so that the oil inthe generator shall be vap'orized before it reaches said burner pipe, and for the purpose of draining the surplus oil which may accumulate in the channel 3, a drain'pipe 27 ex-' tends down through the `receptacle from the base'of the channel 4 and may discharge into a suitable receptacle, not shown, below the stove 28 equipped with such' burner, or at any other peint Assuming that ges. 1S belng burned, it Will be understood that its prcssure'holds the valve 1,4 in, disposition Shown in. Fis- 31, apd that the gas entering the receptacle 'is discharged upwardly through the orifices 5 and 6 where it is ignited. Should the supply of gas be cut ol accidentally or otherwise, the spring 16 will slide the valve 14 to the right and thus establish communication between ports l2 and 13 by Way ofA channel .15 of said valve, and as, this action occurs oil will pass from the tank through pipe 19,

if valve 20 is open which is its normal condition, to port 12 and then pass by way of channel 15, port 13 and pipe 21 to 'the' generator 23, wbereit isconverted into vapor because such generator has been raised to 18 1S an 011 Supply tank located at a con-V screw 17, valve 14 opened and oil be permitted to pass into the channel 3 and be ignited therein for the purpose of raising the generators to vaporizing temperature, and as soon as this occurs the gas thus produced and discharged Jfrom the pi es 25, continues this vaporizing action, it being obvious that if an excess quantity of oil is supplied to channel 3, the surplus will overflow, into channel 4 and escape by way of the drain pipe 27. By this arrangement it is obvious that if an excess quantity of oil is supplied to channel 3, it cannot rise -to the level of the orifices 5 and 6 and enter the receptacle 1 and thus pass down into the gas supply pipe 7 and out through the mixer 9 upon the floor.

From the above description, it will'be ap parent that I have produceda combined oil and gas burner embodying the feature of advantage enumerated as desirable, and

which is susceptible of modification without departing from the principle of construction as defined by the appended claims. I claim: f

1. A' burner, comprising a part provided with Ian annular oil containing channel in its upper side and a drain pipe passing through the space inclosed by said channel to carry off excess liquid therefrom, a twoarmed generatorv over the channel, and a burner pipe interposed between the bottom of the channel and the generator and communicatingv with the latter and provided with 4orifices to discharge ame upwardly against the same.

2. In a burner, a feed pipe branching into two semicircular generator sections each leading into a' semicircular return section Within and slightly spacedffrom the first sections, `and said return -sections'each leading into a semicircular burner section, each vburner section being located directly beneath the space between said generator and return sections.

3. The combination with a'n oil burner, of'an oil supply pipe, a sprin -pressed valve in said supply pipe, said va ve being normally open to permit .the How of oil through.v

said pipe, and means for supplying to said.

valve gas under pressure tendlng to close the same and shut off the oil supply. p

4. In a Vcombined oil and gas burner, an oil supply -pipe and a gas supply pipe, both pipes communicating with the burner, a valve in` the oil supply pipe, a spring acting upon said valve and tending to force it in a direction to open it to permit oil to flow through the oil pipe, and a branch pipe from said valve to the gas supply -pipe whereby pressure is applied to the valve'tending t0 force it in a directionvto close it and shut oil the flow of oil in .the oil pipe. p

6. The combination of ,a burner pan, a

pipe communicating therewith, a top on the pan provided with an annularf'channel and a series of holes around its border, and also with a central shallow depression communi cating with the channel, and a pipe com- 'municating at its upper end with the depression at a point below the plane of said hles. In testimony whereof I aix my signature` in the presence of two witnesses.

. OLIVER NICHOLS.

Witnesses M. lI-I. CLARK,- G. C. REYNoLns. 

